一个完整的java程序示例_write javabean error fastjson

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import org.springframework.web.util.WebUtils; //導入方法依賴的package包/類

/**

* Initialize logback, including setting the web app root system property.

*

* @param servletContext the current ServletContext

* @see WebUtils#setWebAppRootSystemProperty

*/

public static void initLogging(ServletContext servletContext) {

// Expose the web app root system property.

if (exposeWebAppRoot(servletContext)) {

WebUtils.setWebAppRootSystemProperty(servletContext);

}

// Only perform custom logback initialization in case of a config file.

String location = servletContext

.getInitParameter(CONFIG_LOCATION_PARAM);

if (location != null) {

// Perform actual logback initialization; else rely on logback’s

// default initialization.

try {

// Return a URL (e.g. “classpath:” or “file:”) as-is;

// consider a plain file path as relative to the web application

// root directory.

if (!ResourceUtils.isUrl(location)) {

// Resolve system property placeholders before resolving

// real path.

location = SystemPropertyUtils

.resolvePlaceholders(location);

location = WebUtils.getRealPath(servletContext, location);

}

// Write log message to server log.

servletContext.log(“Initializing logback from [” + location

+ “]”);

// Initialize without refresh check, i.e. without logback’s

// watchdog thread.

LogbackConfigurer.initLogging(location);

} catch (FileNotFoundException ex) {

throw new IllegalArgumentException(

“Invalid ‘logbackConfigLocation’ parameter: “

+ ex.getMessage());

}

}

}

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